Campanula plant named &#39;PTW1300101&#39;

ABSTRACT

A new and distinct  Campanula  plant named ‘PTW1300101’, characterized by its compact, upright to spreading and uniformly mounding plant habit; freely flowering habit; white-colored flowers; and good garden performance.

Botanical designation: Campanula portenschlagiana.

Cultivar denomination: ‘PTW1300101’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct Campanula plant, botanically known as Campanula portenschlagiana and hereinafter referred to by the cultivar name ‘PTW1300101’.

The new Campanula plant is a product of a planned breeding program conducted by the Inventor in Twello, The Netherlands. The objective of the breeding program is to create new compact and freely-flowering Campanula plants that have good container and garden performance.

The new Campanula plant originated from a cross-pollination in July, 2011 of a proprietary selection of Campanula portenschlagiana identified as code number PTW-1200102S, not patented, as the female, or seed, parent with a proprietary selection of Campanula portenschlagiana identified as code number PTW-1100601S, not patented, as the male, or pollen, parent. The new Campanula plant was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated cross-pollination grown in a controlled greenhouse environment in Twello, The Netherlands in July, 2012

Asexual reproduction of the new Campanula plant by terminal vegetative cuttings in a controlled greenhouse environment in Twello, The Netherlands, since January, 2013, has shown that the unique features of the new Campanula plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Campanula plant have not been observed under all possible combinations of environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘PTW1300101’. These characteristics in combination distinguish ‘PTW1300101’ as a new and distinct Campanula plant:

-   -   1. Compact, upright to spreading and uniformly mounding plant         habit.     -   2. Freely flowering habit.     -   3. White-colored flowers.     -   4. Good garden performance.

Plants of the new Campanula differ from plants of the female parent selection primarily in the following characteristics:

-   -   1. Plants of the new Campanula have larger flowers than plants         of the female parent selection.     -   2. Flowers of plants of the new Campanula are white in color         whereas flowers of plants of the female parent selection have         white-colored flowers with blue shading.

Plants of the new Campanula differ from plants of the male parent selection primarily in the following characteristics:

-   -   1. Plants of the new Campanula are more compact and uniform than         plants of the male parent selection.     -   2. Leaves of plants of the new Campanula are darker green in         color than leaves of plants of the male parent selection have         white-colored flowers with blue shading.

Plants of the new Campanula can be compared to plants of Campanula portenschlagiana ‘Get Mee White’, not patented. In side-by-side comparisons conducted by the Inventor in Twello, The Netherlands, plants of the new Campanula differed primarily from plants of ‘Get Mee White’ in the following characteristics:

-   -   1. Plants of the new Campanula were more upright than and not as         spreading as plants of ‘Get Mee White’.     -   2. Leaves of plants of the new Campanula were darker green in         color than leaves of plants of ‘Get Mee White’.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Campanula plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the actual colors of the new Campanula plant. The photograph on the first sheet is a side perspective view of a typical flowering plant of ‘PTW1300101’ grown in a container. The photograph on the second sheet is a close-up view of a typical flowering plant of ‘PTW1300101’.

DETAILED BOTANICAL DESCRIPTION

Plants used for the aforementioned photographs and following description were grown in 10.5-cm containers during the spring in a glass-covered greenhouse in Poeldijk, The Netherlands and under cultural practices typical of commercial Campanula production. During the production of the plants, day temperatures ranged from 16° C. to 18° C., night temperatures ranged from 14° C. to 16° C. and light levels averaged 4,000 lux. Plants were 13 weeks old when the photographs and description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2007 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Campanula portenschlagiana ‘PTW1300101’. -   Parentage:     -   -   Female parent.—Proprietary selection of Campanula             portenschlagiana identified as code number PTW-1200102S, not             patented.         -   Male parent.—Proprietary selection of Campanula             portenschlagiana identified as code number PTW-1100601S, not             patented. -   Propagation:     -   -   Type.—By terminal vegetative cuttings.         -   Time to initiate roots, summer.—About ten to twelve days at             temperatures about 2320 to 24° C.         -   Time to initiate roots, winter.—About seven to ten days at             temperatures about 22° to 23° C.         -   Time to produce a rooted young plant, summer.—About 42 days             at temperatures about 23° to 24° C.         -   Time to produce a rooted young plant, winter.—About 36 days             at temperatures about 22° to 23° C.         -   Root description.—Fine, fleshy; typically white in color,             actual color of the roots is dependent on substrate             composition, water quality, fertilizers, substrate             temperature and physiological age of roots.         -   Rooting habit.—Moderately freely branching; medium density. -   Plant description:     -   -   Plant and growth habit.—Herbaceous perennial; compact,             upright to spreading and uniformly mounding plant habit;             inverted triangle; moderately vigorous growth habit;             numerous campanulate flowers positioned above and beyond the             foliar plane.         -   Plant height.—About 12 cm.         -   Plant width.—About 24.5 cm.         -   Branch description.—Branching habit: Freely branching habit             with about 70 lateral branches developing per plant. Length:             About 8 cm. Diameter: About 2 mm. Internode length: About             1.4 cm. Strength: Moderately strong. Aspect: Upright to             horizontal. Texture: Smooth, glabrous. Luster: Glossy.             Color: Close to 144A to 144B. -   Leaf description:     -   -   Arrangement.—Alternate, simple.         -   Length.—About 2 cm.         -   Width.—About 2.2 cm.         -   Shape.—Deltoid to broadly cordate.         -   Apex.—Bluntly acute.         -   Base.—Reniform to hastate.         -   Margin.—Coarsely dentate.         -   Texture, upper surface.—Sparsely pubescent.         -   Texture, lower surface.—Glabrous.         -   Luster, upper surface.—Slightly glossy.         -   Luster, lower surface.—Very slightly glossy.         -   Venation pattern.—Pinnate.         -   Color.—Developing leaves, upper surface: Close N137C.             Developing leaves, lower surface: Close to 137C. Fully             expanded leaves, upper surface: Close to N137C; venation,             close to 143B. Fully expanded leaves, lower surface: Close             to between 138B and 138C; venation, close to 146B.         -   Petioles.—Length: About 3.8 cm. Diameter: About 1 mm.             Strength: Strong. Texture, upper and lower surfaces: Smooth.             Luster, upper and lower surfaces: Glossy. Color, upper and             lower surfaces: Close to 143B. -   Flower description:     -   -   Flower arrangement and flowering habit.—Single campanulate             flowers arranged in terminal and axillary simple cymes;             flowers face mostly upright to outwardly; freely flowering             habit with about 15 flowers developing in terminal             inflorescences and about four flowers developing in axillary             inflorescences; about 1,800 flowers develop per plant during             the flowering season.         -   Natural flowering season.—Plants begin flowering about ten             weeks after planting; relatively long flowering period,             plants flower continuously from mid-May into August in The             Netherlands.         -   Flower longevity on the plant.—About ten days; flowers             persistent.         -   Fragrance.—Faint, sweet and somewhat musky; pleasant.         -   Flower buds.—Length: About 1.3 cm. Diameter: About 5 mm.             Shape: Narrowly oblong to oblong. Color: Proximally, close             to 143A; distally, close to 155B; at the base, close to             143C.         -   Inflorescence height.—About 4.2 cm.         -   Inflorescence diameter.—About 4.6 cm.         -   Flower diameter.—About 2.5 cm.         -   Flower depth (height).—About 1.6 cm.         -   Petals.—Quantity and arrangement: Typically five,             occasionally six, in a single whorl; fused toward the lower             37.5% of the petal. Length: About 1.9 cm. Width: About 6 mm.             Shape: Elliptic; recurved. Apex: Acute. Margin: Entire.             Texture, upper and lower surfaces: Smooth, glabrous. Luster,             upper surface: Matte. Luster, lower surface: Slightly             glossy. Color: When opening, upper surface: Close to between             85C and N88D, closest to 85C; towards the base, close to             NN155D. When opening, lower surface: Close to 85C; towards             the apex, close to 85B; at the base, close to NN155D. Fully             opened, upper surface: Close to lighter than NN155D; towards             the apex, lightly tinged with close to between 85C to 85D;             color does not change with development. Fully opened, lower             surface: Close to lighter than NN155D; towards the apex,             lightly tinged with close to 85C; color does not change with             development.         -   Sepals.—Quantity and arrangement: Typically five,             occasionally six, in a single whorl; fused towards the lower             33% of the sepal. Length: About 6 mm. Width: About 1.5 mm.             Shape: Lanceolate. Apex: Narrowly acute. Margin: Entire.             Texture, upper and lower surfaces: Glabrous. Luster, upper             and lower surfaces: Matte. Color: When opening and fully             opened, upper surface: Close to 143B. When opening and fully             opened, lower surface: Close to 143A; towards the base,             close to 143C.         -   Peduncles.—Length: About 2.6 cm. Diameter: About 1.5 mm.             Aspect, flowers in terminal inflorescences: Mostly upright.             Aspect, flowers in axillary inflorescences: About 35° from             lateral branch axis. Strength: Moderately strong. Texture:             Slightly ribbed, glabrous. Luster: Moderately glossy. Color:             Close to 143C.         -   Pedicels.—Length: About 1 cm. Diameter: About 1 mm. Aspect:             About 35° from peduncle axis. Strength: Moderately strong.             Texture: Slightly ribbed, glabrous. Luster: Moderately             glossy. Color: Close to 144C.         -   Reproductive organs.—Stamens: Quantity per flower: Typically             five, occasionally six. Filament length: About 2.5 mm.             Filament color: Close to NN155D. Anther shape: Lanceolate.             Anther length: About 5 mm. Anther color: Close to 161D.             Pollen amount: Moderate. Pollen color: Close to 4D. Pistils:             Quantity per flower: One. Pistil length: About 1.3 cm.             Stigma shape: Three-parted, decurrent. Stigma color: Close             to NN155D. Style length: About 1.1 cm. Style color: Close to             NN155D. Ovary color: Close to 143C.         -   Seeds and fruits.—Seed and fruit production has not been             observed on plants of the new Campanula. -   Disease & pest resistance: Plants of the new Campanula have not been     noted to be resistant to pathogens and pests common to Campanula     plants. -   Garden performance: Plants of the new Campanula have exhibited good     tolerance to rain and wind, to tolerate high temperatures about     35° C. and to be hardy to USDA Hardiness Zone 3. 

It is claimed:
 1. A new and distinct Campanula plant named ‘PTW1300101’ as illustrated and described. 